CN113882710A - Device and method for integral translation of raft structure with foundation - Google Patents
Device and method for integral translation of raft structure with foundation Download PDFInfo
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- CN113882710A CN113882710A CN202111061760.XA CN202111061760A CN113882710A CN 113882710 A CN113882710 A CN 113882710A CN 202111061760 A CN202111061760 A CN 202111061760A CN 113882710 A CN113882710 A CN 113882710A
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- 238000013519 translation Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000003068 static effect Effects 0.000 claims abstract description 54
- 238000010276 construction Methods 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims description 25
- 238000009412 basement excavation Methods 0.000 claims description 15
- 238000012806 monitoring device Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 1
- 238000013461 design Methods 0.000 claims 1
- 239000011178 precast concrete Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 238000004080 punching Methods 0.000 description 2
- 238000009424 underpinning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Foundations (AREA)
Abstract
The application relates to a take whole translation method of basic raft structure, it includes: s1 excavating a first section of pilot tunnel, wherein the first section of pilot tunnel is excavated on a downward slope below the bottom of the raft; s2, the pile foundation is statically pressed by utilizing the self weight of the upper structure, the pile pressing is stopped after the pile foundation reaches a set pile pressing force, and a space for installing a jacking piece is reserved between the pile top of the static pile and the bottom of the raft; s3, installing a jacking piece, installing the jacking piece on the top of the static pressure pile, and connecting the jacking piece with a control pump station; s4, jacking the jacking piece to lift the extending cylinder, actively applying the supporting force of the static pressure pile to the raft plate foundation, and transmitting the load of the raft plate and the upper structure to the static pressure pile through the jacking piece; s5, entering the construction of the next standard section, and circularly constructing S3-S4; s6, the construction space at the bottom of the building is completely excavated, and the load of the raft and the upper structure is completely transferred to the jacking piece and the static pressure pile to form a translation construction operation space. This application has the probability of stabilizing the soil body side slope, reducing the unsettled die-cut destruction of raft board to and the effect of even settlement.
Description
Technical Field
The application relates to the field of integral translation of buildings, in particular to a device and a method for integral translation of a raft structure with a foundation.
Background
At present, the whole translation technology of building is more and more extensively used, and is more and more diversified by translation building type and requirement, mainly includes modes such as basic cutting off type translation and take raft structure whole translation.
Take raft structure integral translation to set up as raft foundation by the basic form of translation building, take raft structure integral translation to need to form the operating space to excavation below the raft, owing to the excavation has reduced the atress area of basis and has changed the biography power route, so need focus on soil body slope stability, the unsettled die-cut of raft destroys, inhomogeneous settlement scheduling problem, as shown in fig. 1.
Disclosure of Invention
In order to stabilize soil body side slope, reduce the unsettled die-cut probability of destruction of raft to and evenly subside, this application provides a take whole device and method of translation of basic raft structure.
First aspect, the application provides a take whole translation of basic raft structure method adopts following technical scheme:
a method for integrally translating a raft structure with a foundation comprises the following steps:
s1, excavating a first section of pilot tunnel, wherein the first section of pilot tunnel is excavated on a downward slope below the bottom of a raft, and the excavation width, height and depth of the first section of pilot tunnel are calculated through a set algorithm;
s2, the pile foundation is statically pressed by utilizing the self weight of the upper structure, the pile pressing is stopped after the pile foundation reaches a set pile pressing force, and a space for installing a jacking piece is reserved between the pile top of the static pile and the bottom of the raft;
s3, installing a jacking piece, installing the jacking piece on the top of the static pressure pile, and connecting the jacking piece with a control pump station;
s4, jacking the jacking piece to lift the extending cylinder, actively applying the supporting force of the static pressure pile to the raft plate foundation, and transmitting the load of the raft plate and the upper structure to the static pressure pile through the jacking piece;
s5, entering the construction of the next standard section, and circularly constructing S3-S4;
s6, the construction space at the bottom of the building is completely excavated, and the load of the raft and the upper structure is completely transferred to the jacking piece and the static pressure pile to form a translation construction operation space.
Through adopting above-mentioned technical scheme, descend the slope below the raft board bottom and excavate the pilot tunnel, through calculation control excavation pilot tunnel's length, after first section pilot tunnel is accomplished, in the pilot tunnel space construction pit type static pressure stake, the static pressure pile top installation jacking piece and connection control pump station, thereby adjust every static pressure stake to superstructure's holding power initial value through controlling jacking piece pressure difference, then the next section pilot tunnel of cycle construction and next batch static pressure stake support. The load of the upper structure of the building is controllably transmitted to the static pressure pile, the pressure of the guide tunnel side slope is directly reduced, and the stability of the side slope in the excavation process is improved. The problems of stable side slope of the pilot tunnel, punching of concentrated loads of frame columns, uneven settlement and the like in the construction process of the structure with the bottom plate are solved, so that the purpose of integral translation of the structure with the bottom plate is achieved, and the use requirements of decoration and equipment of a building and the non-stop building are not damaged in the translation construction process.
Preferably, the method further comprises the following steps:
and S0, installing real-time monitoring equipment for detecting the state of the moved building and debugging the equipment.
By adopting the technical scheme, the real-time monitoring equipment of the upper structure senses the state changes of the building, such as settlement, inclination and the like.
Preferably, during the construction process, the data change of the upper structure monitoring equipment and the pressure data change of the jacking piece are observed in real time, and the pressure change value of the jacking piece in the corresponding area is adjusted after the allowable value is exceeded.
By adopting the technical scheme, the pressure of the pile top jacking piece in the corresponding range can be changed at any time according to the detection data of the real-time monitoring equipment, so that the settlement change of the building can be controlled.
Preferably, the real-time monitoring equipment comprises a settlement detector, a stress-strain tester, a crack width gauge and an inclination sensor, and the real-time monitoring equipment outputs a plurality of monitoring signals, compares the detection signals with an allowable value and outputs a comparison result.
By adopting the technical scheme, the problems of sedimentation, deformation, cracking, inclination and the like which are easy to occur in the translation process of the building can be monitored in real time through the equipment.
The second aspect, the application provides a take whole device of translation of basic raft structure, adopts following technical scheme:
the utility model provides a take whole device of translation of basic raft structure, includes static pile, jacking spare, control pump station and real-time supervision equipment, the static pile is pre-buried in by the building below of shifting, the jacking spare install in between static pile bolck and the raft bottom, and with the contact at the bottom of static pile bolck, the raft, control pump station with the jacking spare is connected to set up in the one side by the building of shifting, real-time supervision equipment set up in by the building of shifting.
Preferably, the static pressure pile is configured as a concrete precast pile or a steel pipe pile.
By adopting the technical scheme, the self weight of the upper structure is used as the counter force, the piles are pressed into the foundation in sections, and the length of each section is determined according to the space size of the pilot tunnel.
Preferably, the jacking piece is configured as a jacking piece, and the pressure of the jacking piece is adjusted according to the data change of the real-time monitoring equipment.
By adopting the technical scheme, the jacking part is connected with the control pump station, the supporting force of each static pressure pile on the upper structure is actively controlled by adjusting the pressure value of the jacking part, and the construction progress and the working procedure are properly adjusted by sensing the change of the pressure of the hydraulic jack. The device makes the support and underpin different from the traditional pit type static pressure pile with the characteristics of uncontrollable, unadjustable and imperceptible passive stress.
Preferably, the control pump station is in signal connection with the real-time monitoring equipment, and when the output signal of the real-time monitoring equipment reaches an allowable value, the control pump station adjusts the pressure value of the jacking piece.
By adopting the technical scheme, the pressure of the jack is adjusted according to the data change of the monitoring equipment, so that the development of the states of building settlement and the like is actively controlled.
In summary, the present application includes at least one of the following beneficial technical effects:
the building does not need to enter the interior of the building, so that the exquisite decoration and electromechanical equipment of the building are not damaged during construction, and the normal use of the building during construction can be ensured.
Drawings
Fig. 1 is a schematic view of the overall translation of a raft structure of the related art;
FIG. 2 is a schematic cross-sectional view of a translation pilot tunnel excavation according to an embodiment of the present application;
FIG. 3 is a longitudinal sectional view of the translational pilot tunnel excavation according to the embodiment of the present application;
FIG. 4 is a schematic view of a real-time monitoring device installation according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a first section of pilot tunnel excavation according to an embodiment of the present application;
FIG. 6 is a schematic diagram of static pressure pile construction according to an embodiment of the application;
FIG. 7 is a schematic view of the jacking member and control pump station installation according to the embodiment of the present application;
FIG. 8 is a schematic diagram illustrating repeated pilot tunnel excavation according to an embodiment of the present application;
FIG. 9 is a schematic diagram illustrating static pile construction, jacking member and control pump station installation according to the embodiment of the application;
FIG. 10 is a schematic view of the construction completed in the embodiment of the present application.
Reference numerals: 1. monitoring equipment in real time; 2. static pressure piles; 3. a jack; 4. controlling a pump station; 5. side slope; 6. a raft plate; 7. connecting the oil pipe and the data line.
Detailed Description
The present application is described in further detail below with reference to figures 2-10.
The embodiment of the application discloses a method for integrally translating a raft structure with a foundation.
Referring to fig. 1, the method includes the steps of:
s0, installing the real-time monitoring equipment 1 and debugging;
s1, excavating 5 a first section of pilot tunnel, wherein the excavation width, height and depth are designed and calculated, and the safety of the foundation and the superstructure (referred to as a building) is not affected by the excavation of the first section of pilot tunnel;
designing and calculating the excavation width, height and depth according to elements such as bearing capacity required by movement of the building, bearing capacity required by an unearthed area below the building, construction period requirements and the like;
s2, the static pressure pile 2 is pressed by the dead weight of the upper structure, the pile pressing is stopped after the static pressure pile 2 reaches the designed pile pressing force, and a space for installing a jack 3 is reserved between the top of the static pressure pile 2 and the bottom of the raft 6; the designed pile pressing force refers to the weight of the static pile 2 bearing the jack 3 and the upper structure and can bear the bearing force of the upper structure for displacement operation, and the jack 3 is configured as a hydraulic jack in the application;
s3, installing jacks 3 on the tops of the static pressure piles 2, connecting the jacks 3 with a control pump station 4, connecting the control pump station 4 with connecting oil pipes and data lines 7, and connecting the connecting oil pipes and the data lines 7 with each jack 3;
s4, the jack 3 jacks the extending cylinder, the supporting force of the static pressure pile 2 is actively applied to the raft 6, and the load of the raft 6 and the upper structure is transmitted to the static pressure pile 2 through the jack 3;
s5, entering the construction of the next standard section, and circularly constructing S3-S4;
s6, paying attention to the data change of the upper structure monitoring equipment 1 and the pressure data change of the jack 3 at any time in the construction process, and adjusting the pressure change value of the jack 3 in the corresponding area after the pressure change value exceeds an allowable value;
and S7, completely excavating the construction space at the bottom of the building, and completely transferring the load of the raft 6 and the upper structure to the jack 3 and the static pressure pile 2 to form a translation construction operation space.
The implementation principle of the method for integrally translating the raft structure with the foundation provided by the embodiment of the application is as follows: the method comprises the steps of placing a slope below a foundation slab to excavate a pilot tunnel, controlling the length of the excavated pilot tunnel by calculation, constructing pit type static pressure piles in a pilot tunnel space after a first section of pilot tunnel is completed, installing hydraulic jacks and connection control pump stations on the static pressure pile tops, adjusting initial values of supporting force of each static pressure pile on an upper structure by controlling the pressure of the jacks, and then circularly constructing a next section of pilot tunnel and a next batch of static pressure pile supports. The load of the upper structure of the building is controllably transmitted to the static pressure pile, the pressure of the guide tunnel side slope is directly reduced, and the stability of the side slope in the excavation process is improved. The invention solves the technical problems of stable side slope of the pilot tunnel, concentrated load punching of frame columns, uneven settlement and the like in the construction process of the structure with the bottom plate, thereby realizing the purpose of integral translation of the structure with the bottom plate and ensuring that the decoration and equipment of a building are not damaged and the use requirement of the building is not stopped in the translation construction process.
The embodiment of the application also discloses a device with the integral translation of the basic raft structure. Referring to fig. 7, the system comprises a real-time monitoring device 1, a static pressure pile 2, a hydraulic jack 3 and a control pump station 4.
The monitoring device 1 is an instrument capable of monitoring the state change of a building, and the monitoring contents are settlement, stress strain, cracks, inclination and the like. The instrument 1 is used for sensing the change of the state of a building in the construction process, combining monitoring data with the hydraulic control system and adjusting the pressure of the hydraulic jack, thereby achieving the purpose of controlling the state development of the upper structure.
The static pressure pile 2 can be made of concrete precast piles or steel pipe piles, the self weight of the upper structure is used as a counter force, the pile is pressed into the foundation in sections, and the length of each section is determined according to the space size of the pilot tunnel. The invention discloses a pit type static pressure pile, which is a foundation reinforcing method and is applied to the temporary underpinning working condition of a foundation.
Hydraulic jack 3 installs in 2 tops of hydrostatic pile, and hydraulic jack 3 is connected with control pump station 4, and the size of the holding power of every hydrostatic pile 2 to superstructure is big or small through 3 pressure value active control of adjustment jack, can adjust jack 2's pressure according to the data change of monitoring facilities 1 in addition to the development of states such as initiative control building settlement, and can also be through the change of 3 pressure of perception hydraulic jack, suitably adjust construction progress and process. The device makes pile foundation underpinning be different from traditional pit type hydrostatic pile 2 uncontrollable, unadjustable, imperceptible passive force characteristics.
The implementation principle of the device of taking whole translation of basic raft structure of the embodiment of this application is: directly placing the foundation slab 6 below a slope to excavate a pilot hole 5, controlling the width, depth and length of the excavated pilot hole 5 by calculation, after the first section of pilot hole 5 is finished, constructing a pit type static pressure pile 2 in the space of the pilot hole 5, after the static pressure pile 2 is pressed, installing a hydraulic jack 3 and a connection control pump station 4 on the pile top, differentially adjusting the initial value of the supporting force of each pile 3 on the upper structure by controlling the pressure of the jack 3, and then circularly constructing the next section of pilot hole 5 and the next batch of static pressure pile 2 supports, and in the process, sensing the state changes of the building such as settlement and inclination and the like by real-time monitoring equipment 1 of the upper structure, and changing the pressure of the jack 3 on the corresponding pile 2 at any time, thereby controlling the state change of the building. The controllable transmission of building superstructure load still directly reduces the pressure of pilot tunnel side slope 5 on supporting pile 3, improves excavation process side slope 5's stability.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a take whole translation's of basic raft structure method which characterized in that includes:
s1 excavating a first section of pilot tunnel, wherein the first section of pilot tunnel is excavated on a downward slope below the bottom of a raft, and the excavation width, height and depth of the first section of pilot tunnel are calculated through design;
s2, the pile foundation is statically pressed by utilizing the self weight of the upper structure, the pile pressing is stopped after the pile foundation reaches a set pile pressing force, and a space for installing a jacking piece is reserved between the pile top of the static pile and the bottom of the raft;
s3, installing a jacking piece, installing the jacking piece on the top of the static pressure pile, and connecting the jacking piece with a control pump station;
s4, jacking the jacking piece to lift the extending cylinder, actively applying the supporting force of the static pressure pile to the raft plate foundation, and transmitting the load of the raft plate and the upper structure to the static pressure pile through the jacking piece;
s5, entering the construction of the next standard section, and circularly constructing S3-S4;
s6, the construction space at the bottom of the building is completely excavated, and the load of the raft and the upper structure is completely transferred to the jacking piece and the static pressure pile to form a translation construction operation space.
2. The method of claim 1, wherein the method further comprises:
and S0, installing real-time monitoring equipment for detecting the state of the moved building and debugging the equipment.
3. The method for integral translation of a raft structure with foundation according to claim 2, wherein during construction, the data changes of the upper structure monitoring equipment and the pressure data changes of the jacking members are observed in real time, and the pressure change values of the jacking members in the corresponding areas are adjusted after the allowable values are exceeded.
4. The method for integral translation of a raft structure with foundation according to claim 3, wherein the real-time monitoring equipment comprises a settlement detector, a stress-strain tester, a crack width gauge and an inclination sensor, the real-time monitoring equipment outputs a plurality of monitoring signals, and the detection signals are compared with an allowable value and a comparison result is output.
5. The utility model provides a take whole device of translation of basic raft structure, a serial communication port, including static pile, jacking spare, control pump station and real-time supervision equipment, the static pile is pre-buried in by the building below of shifting, the jacking spare install in between static pile top and the raft bottom, and with contact at the bottom of static pile top, the raft, control pump station with the jacking spare is connected to set up in the one side by the building of shifting, real-time supervision equipment set up in by the building of shifting.
6. The device of claim 5, wherein the static pressure piles are configured as precast concrete piles or steel pipe piles.
7. The device of claim 5, wherein the jacking member is configured as a jacking member, and the pressure of the jacking member is adjusted according to the data change of the real-time monitoring equipment.
8. The device of claim 7, wherein the control pump station is in signal connection with a real-time monitoring device, and when an output signal of the real-time monitoring device reaches an allowable value, the control pump station adjusts a pressure value of the jacking member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061760.XA CN113882710B (en) | 2021-09-10 | 2021-09-10 | Integral translation device and method for raft structure with foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061760.XA CN113882710B (en) | 2021-09-10 | 2021-09-10 | Integral translation device and method for raft structure with foundation |
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| Publication Number | Publication Date |
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| CN113882710A true CN113882710A (en) | 2022-01-04 |
| CN113882710B CN113882710B (en) | 2023-03-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114969889A (en) * | 2022-04-18 | 2022-08-30 | 甘肃省公路交通建设集团有限公司 | Method for calculating stress of overhanging raft plate of piled raft foundation |
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| CN106436788A (en) * | 2016-02-29 | 2017-02-22 | 兰州理工大学 | Foundation reinforcement and inclination correction method for friction piles of high-rise building |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114969889A (en) * | 2022-04-18 | 2022-08-30 | 甘肃省公路交通建设集团有限公司 | Method for calculating stress of overhanging raft plate of piled raft foundation |
| CN114969889B (en) * | 2022-04-18 | 2024-06-04 | 朱胜祥 | Pile-raft foundation overhanging raft stress calculation method |
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Denomination of invention: A device and method for overall translation of raft structure with foundation Granted publication date: 20230303 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Qingpu sub branch Pledgor: SHANGHAI EVOLUTION BUILDING SHIFT ENGINEERING CO.,LTD. Registration number: Y2024310000110 |